/**
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * <p>
 * Copyright 2017 © yangxiaobing, 873559947@qq.com
 * <p>
 * This file is part of contentManagerSystem.
 * contentManagerSystem is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * <p>
 * contentManagerSystem is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public License
 * along with contentManagerSystem.  If not, see <http://www.gnu.org/licenses/>.
 * <p>
 * 这个文件是contentManagerSystem的一部分。
 * 您可以单独使用或分发这个文件，但请不要移除这个头部声明信息.
 * contentManagerSystem是一个自由软件，您可以自由分发、修改其中的源代码或者重新发布它，
 * 新的任何修改后的重新发布版必须同样在遵守GPL3或更后续的版本协议下发布.
 * 关于GPL协议的细则请参考COPYING文件，
 * 您可以在contentManagerSystem的相关目录中获得GPL协议的副本，
 * 如果没有找到，请连接到 http://www.gnu.org/licenses/ 查看。
 * <p>
 * - Author: yangxiaobing
 * - Contact: 873559947@qq.com
 * - License: GNU Lesser General Public License (GPL)
 * - source code availability: http://git.oschina.net/yangxiaobing_175/contentManagerSystem
 */
package com.yxb.cms.service;

import com.yxb.cms.architect.constant.BussinessCode;
import com.yxb.cms.architect.utils.BussinessMsgUtil;
import com.yxb.cms.dao.ClassesMapper;
import com.yxb.cms.domain.bo.BussinessMsg;
import com.yxb.cms.domain.vo.Classes;
import com.yxb.cms.domain.vo.Students;
import com.yxb.cms.enums.YesOrNo;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.nutz.json.Json;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 班级Servce
 *
 * @author yangxiaobing
 * @date 2018/03/28
 */

@Service
public class ClassesService {

    private Logger log = LogManager.getLogger(ClassesService.class);

    @Autowired
    private ClassesMapper classesMapper;

    @Autowired
    private StudentsService studentsService;

    /**
     * 查询所有的班级
     * @return
     */
    public List<Classes> queryAllClasses(){
        return classesMapper.selectAllClasses();
    }

    /**
     * 班级信息分页显示
     * @param classes 班级实体
     * @return
     */
    public String  selectClassPageList(Classes classes){

        List<Classes> classesList = classesMapper.selectClassPage(classes);

        Long count = classesMapper.countByExample(classes);

        Map<String, Object> map = new HashMap<String, Object>();
        map.put("code",0);
        map.put("msg","");
        map.put("count",count);
        map.put("data", classesList);
        return Json.toJson(map);
    }

    /**
     * 插入班级
     * @param classes 班级实体
     */
    @Transactional
    public BussinessMsg insertClasses(Classes classes, String currUserName){

        try {
            if(null == classes.getClassCode()){
                return BussinessMsgUtil.returnCodeMessage(BussinessCode.CLASSCODE_IS_NOT_NULL);
            }
            Classes cla = classesMapper.queryClassesByClassesCode(classes.getClassCode());

            if(null != cla){
                return BussinessMsgUtil.returnCodeMessage(BussinessCode.CLASSCODE_EXITS);
            }

            Date now = new Date();
            classes.setCreateTime(now);
            classes.setCreator(currUserName);
            classes.setUpdateTime(now);
            classes.setModifier(currUserName);
            classes.setDeleteFlage(YesOrNo.NO.getValue());

            classesMapper.insertSelective(classes);
        } catch (Exception e) {
            log.error("保存学生信息方法内部错误",e);
            throw e;
        }
        return BussinessMsgUtil.returnCodeMessage(BussinessCode.GLOBAL_SUCCESS);
    }


    /**
     * 更新学生
     * @param classes 学生实体
     */
    @Transactional
    public BussinessMsg updateByPrimaryKeySelective(Classes classes, String currUserName){
        System.out.println("test22222~~~~~~~~~~~~~~~~~");
        try {
            if(null == classes.getClassCode()){
                return BussinessMsgUtil.returnCodeMessage(BussinessCode.CLASSCODE_IS_NOT_NULL);
            }
            Classes cla = classesMapper.queryClassesByClassesCode(classes.getClassCode());
            if(null != cla && classes.getId() != cla.getId()){
                return BussinessMsgUtil.returnCodeMessage(BussinessCode.CLASSCODE_EXITS);
            }
            classes.setUpdateTime(new Date());
           classes.setModifier(currUserName);
            classesMapper.updateByPrimaryKeySelective(classes);

        } catch (Exception e) {
            log.error("修改班级信息方法内部错误",e);
            throw e;
        }
        return BussinessMsgUtil.returnCodeMessage(BussinessCode.GLOBAL_SUCCESS);
    }

    /**
     * 查询班级
     * @param classId 班级ID
     */
    public Classes queryClassesByClassId(Long classId){
        //systemLogMapper.updateByPrimaryKeySelective(systemLog);
        Classes classes = classesMapper.selectByPrimaryKey(classId);
        return classes;
    }

    /**
     * 删除班级
     * @param classId 班级ID
     */
    @Transactional
    public BussinessMsg deleteByPrimaryKeySelective(Long classId){
        try {

            //查询班级下是否还有学生
            List<Students> students = studentsService.queryStudentsByClasses(classId);

            if(students.size()>0){
                return BussinessMsgUtil.returnCodeMessage(BussinessCode.CLASSCODE_HAVE_STU);
            }

            Classes classes = new Classes();
            classes.setDeleteFlage(YesOrNo.YES.getValue());
            classes.setId(classId);
            classesMapper.updateByPrimaryKeySelective(classes);
        } catch (Exception e) {
            log.error("删除学生信息方法内部错误",e);
            throw e;
        }
        return BussinessMsgUtil.returnCodeMessage(BussinessCode.GLOBAL_SUCCESS);
    }

}
